Note that unlike many studies that require the pre-collapse core to have very fast rotation so its specific angular momentum by itself allows the formation of accretion disk around the newly born neutron star or black hole (e.g., [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]}),
in the jittering jets explosion mechanism convective fluctuations in the pre-collapse core can supply additional stochastic angular momentum and therefore the core might have a slower rotation (e.g., [13]}, [14]}, [15]}).
